diff --git a/dist/setup/index.js b/dist/setup/index.js
index b664896be..60ad85859 100644
--- a/dist/setup/index.js
+++ b/dist/setup/index.js
@@ -63920,7 +63920,7 @@ class PoetryCache extends cache_distributor_1.default {
             const lines = stdout.trim().split('\n');
             const config = {};
             for (let line of lines) {
-                line = line.replace(/#.*$/, '');
+                line = line.replace(/#.*$/gm, '');
                 const [key, value] = line.split('=').map(part => part.trim());
                 config[key] = JSON.parse(value);
             }
diff --git a/src/cache-distributions/poetry-cache.ts b/src/cache-distributions/poetry-cache.ts
index 58aa5fd97..5e22b5dd7 100644
--- a/src/cache-distributions/poetry-cache.ts
+++ b/src/cache-distributions/poetry-cache.ts
@@ -58,7 +58,7 @@ class PoetryCache extends CacheDistributor {
     const config: any = {};
 
     for (let line of lines) {
-      line = line.replace(/#.*$/, '');
+      line = line.replace(/#.*$/gm, '');
 
       const [key, value] = line.split('=').map(part => part.trim());